Pumps with vents to vent inverted containers and refill units having non-collapsing containers
US9648992B2 · kind B2 · utility
9Cited by
115References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2014 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Jan 2, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1069
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exemplary embodiments of refill units having foam pumps and non-collapsing containers are disclosed herein. In some exemplary embodiments, the refill unit includes a non-collapsing container and a foam pump. The foam pump includes a compressible air chamber. The foam pump includes a passage between the interior of the compressible air chamber and the interior of the container. A regulating valve regulates flow of air from the interior of the compressible air chamber to the interior of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.